the laws deal with that. i was wondering what you see your country's role in enforcing security with this new bill. thank you. >> the border is of course a natural, shared responsibility. we have to see what doris was saying. the forecast that was made 20 years ago is here now. in 1960, the fertility rate in mexico for women was 7.2 kids per women. today it is 2.2%. in cities like mexico city, it is 1.8%. actually, the supply of mexicans entering the labor force and willing or able to migrate has dramically shrink. i remember when i was part of the border safety agreement in 2002, it was -- back then we were using an old reference. around 7,000 head count. last year, it was 22,000 headcount. this is not only because the border patrol became much more effective in doing their job, they did. also, the supply from mexico to cross the border to migrate into the united states is not there anymore. this is essentially a zero net migration into the u.s. we have commitment and responsibility to cooperate with the uni